Commit | Line | Data |
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cc4ceb48 DV |
1 | /* |
2 | * Copyright (C) 2014 Red Hat | |
3 | * Copyright (C) 2014 Intel Corp. | |
a4324a7a | 4 | * Copyright (c) 2020-2021, The Linux Foundation. All rights reserved. |
cc4ceb48 DV |
5 | * |
6 | * Permission is hereby granted, free of charge, to any person obtaining a | |
7 | * copy of this software and associated documentation files (the "Software"), | |
8 | * to deal in the Software without restriction, including without limitation | |
9 | * the rights to use, copy, modify, merge, publish, distribute, sublicense, | |
10 | * and/or sell copies of the Software, and to permit persons to whom the | |
11 | * Software is furnished to do so, subject to the following conditions: | |
12 | * | |
13 | * The above copyright notice and this permission notice shall be included in | |
14 | * all copies or substantial portions of the Software. | |
15 | * | |
16 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR | |
17 | * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, | |
18 | * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL | |
19 | * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR | |
20 | * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, | |
21 | * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR | |
22 | * OTHER DEALINGS IN THE SOFTWARE. | |
23 | * | |
24 | * Authors: | |
25 | * Rob Clark <robdclark@gmail.com> | |
26 | * Daniel Vetter <daniel.vetter@ffwll.ch> | |
27 | */ | |
28 | ||
29 | ||
0500c04e SR |
30 | #include <linux/sync_file.h> |
31 | ||
cc4ceb48 | 32 | #include <drm/drm_atomic.h> |
72fdb40c | 33 | #include <drm/drm_atomic_uapi.h> |
90bb087f | 34 | #include <drm/drm_blend.h> |
75146591 | 35 | #include <drm/drm_bridge.h> |
0500c04e SR |
36 | #include <drm/drm_debugfs.h> |
37 | #include <drm/drm_device.h> | |
38 | #include <drm/drm_drv.h> | |
39 | #include <drm/drm_file.h> | |
40 | #include <drm/drm_fourcc.h> | |
720cf96d | 41 | #include <drm/drm_framebuffer.h> |
5488dc16 | 42 | #include <drm/drm_mode.h> |
fceffb32 | 43 | #include <drm/drm_print.h> |
935774cd | 44 | #include <drm/drm_writeback.h> |
cc4ceb48 | 45 | |
be35f94f | 46 | #include "drm_crtc_internal.h" |
f02b604b | 47 | #include "drm_internal.h" |
be35f94f | 48 | |
b3ba3f6f | 49 | void __drm_crtc_commit_free(struct kref *kref) |
3b24f7d6 DV |
50 | { |
51 | struct drm_crtc_commit *commit = | |
52 | container_of(kref, struct drm_crtc_commit, ref); | |
53 | ||
54 | kfree(commit); | |
55 | } | |
b3ba3f6f | 56 | EXPORT_SYMBOL(__drm_crtc_commit_free); |
3b24f7d6 | 57 | |
b99c2c95 MR |
58 | /** |
59 | * drm_crtc_commit_wait - Waits for a commit to complete | |
60 | * @commit: &drm_crtc_commit to wait for | |
61 | * | |
62 | * Waits for a given &drm_crtc_commit to be programmed into the | |
63 | * hardware and flipped to. | |
64 | * | |
65 | * Returns: | |
66 | * | |
67 | * 0 on success, a negative error code otherwise. | |
68 | */ | |
69 | int drm_crtc_commit_wait(struct drm_crtc_commit *commit) | |
70 | { | |
71 | unsigned long timeout = 10 * HZ; | |
72 | int ret; | |
73 | ||
74 | if (!commit) | |
75 | return 0; | |
76 | ||
77 | ret = wait_for_completion_timeout(&commit->hw_done, timeout); | |
78 | if (!ret) { | |
6e22dc35 | 79 | drm_err(commit->crtc->dev, "hw_done timed out\n"); |
b99c2c95 MR |
80 | return -ETIMEDOUT; |
81 | } | |
82 | ||
83 | /* | |
84 | * Currently no support for overwriting flips, hence | |
85 | * stall for previous one to execute completely. | |
86 | */ | |
87 | ret = wait_for_completion_timeout(&commit->flip_done, timeout); | |
88 | if (!ret) { | |
6e22dc35 | 89 | drm_err(commit->crtc->dev, "flip_done timed out\n"); |
b99c2c95 MR |
90 | return -ETIMEDOUT; |
91 | } | |
92 | ||
93 | return 0; | |
94 | } | |
95 | EXPORT_SYMBOL(drm_crtc_commit_wait); | |
96 | ||
036ef573 ML |
97 | /** |
98 | * drm_atomic_state_default_release - | |
99 | * release memory initialized by drm_atomic_state_init | |
100 | * @state: atomic state | |
101 | * | |
102 | * Free all the memory allocated by drm_atomic_state_init. | |
da6c0596 DV |
103 | * This should only be used by drivers which are still subclassing |
104 | * &drm_atomic_state and haven't switched to &drm_private_state yet. | |
036ef573 ML |
105 | */ |
106 | void drm_atomic_state_default_release(struct drm_atomic_state *state) | |
cc4ceb48 DV |
107 | { |
108 | kfree(state->connectors); | |
cc4ceb48 | 109 | kfree(state->crtcs); |
cc4ceb48 | 110 | kfree(state->planes); |
b430c27a | 111 | kfree(state->private_objs); |
cc4ceb48 | 112 | } |
036ef573 | 113 | EXPORT_SYMBOL(drm_atomic_state_default_release); |
cc4ceb48 DV |
114 | |
115 | /** | |
036ef573 | 116 | * drm_atomic_state_init - init new atomic state |
cc4ceb48 | 117 | * @dev: DRM device |
036ef573 | 118 | * @state: atomic state |
cc4ceb48 | 119 | * |
036ef573 | 120 | * Default implementation for filling in a new atomic state. |
da6c0596 DV |
121 | * This should only be used by drivers which are still subclassing |
122 | * &drm_atomic_state and haven't switched to &drm_private_state yet. | |
cc4ceb48 | 123 | */ |
036ef573 ML |
124 | int |
125 | drm_atomic_state_init(struct drm_device *dev, struct drm_atomic_state *state) | |
cc4ceb48 | 126 | { |
0853695c CW |
127 | kref_init(&state->ref); |
128 | ||
d34f20d6 RC |
129 | /* TODO legacy paths should maybe do a better job about |
130 | * setting this appropriately? | |
131 | */ | |
132 | state->allow_modeset = true; | |
133 | ||
cc4ceb48 DV |
134 | state->crtcs = kcalloc(dev->mode_config.num_crtc, |
135 | sizeof(*state->crtcs), GFP_KERNEL); | |
136 | if (!state->crtcs) | |
137 | goto fail; | |
cc4ceb48 DV |
138 | state->planes = kcalloc(dev->mode_config.num_total_plane, |
139 | sizeof(*state->planes), GFP_KERNEL); | |
140 | if (!state->planes) | |
141 | goto fail; | |
cc4ceb48 | 142 | |
4e076c73 DV |
143 | /* |
144 | * Because drm_atomic_state can be committed asynchronously we need our | |
145 | * own reference and cannot rely on the on implied by drm_file in the | |
146 | * ioctl call. | |
147 | */ | |
148 | drm_dev_get(dev); | |
cc4ceb48 DV |
149 | state->dev = dev; |
150 | ||
6e22dc35 | 151 | drm_dbg_atomic(dev, "Allocated atomic state %p\n", state); |
cc4ceb48 | 152 | |
036ef573 | 153 | return 0; |
cc4ceb48 | 154 | fail: |
036ef573 ML |
155 | drm_atomic_state_default_release(state); |
156 | return -ENOMEM; | |
157 | } | |
158 | EXPORT_SYMBOL(drm_atomic_state_init); | |
159 | ||
160 | /** | |
161 | * drm_atomic_state_alloc - allocate atomic state | |
162 | * @dev: DRM device | |
163 | * | |
164 | * This allocates an empty atomic state to track updates. | |
165 | */ | |
166 | struct drm_atomic_state * | |
167 | drm_atomic_state_alloc(struct drm_device *dev) | |
168 | { | |
169 | struct drm_mode_config *config = &dev->mode_config; | |
036ef573 ML |
170 | |
171 | if (!config->funcs->atomic_state_alloc) { | |
ac7c7483 DK |
172 | struct drm_atomic_state *state; |
173 | ||
036ef573 ML |
174 | state = kzalloc(sizeof(*state), GFP_KERNEL); |
175 | if (!state) | |
176 | return NULL; | |
177 | if (drm_atomic_state_init(dev, state) < 0) { | |
178 | kfree(state); | |
179 | return NULL; | |
180 | } | |
181 | return state; | |
182 | } | |
cc4ceb48 | 183 | |
036ef573 | 184 | return config->funcs->atomic_state_alloc(dev); |
cc4ceb48 DV |
185 | } |
186 | EXPORT_SYMBOL(drm_atomic_state_alloc); | |
187 | ||
188 | /** | |
036ef573 | 189 | * drm_atomic_state_default_clear - clear base atomic state |
cc4ceb48 DV |
190 | * @state: atomic state |
191 | * | |
036ef573 | 192 | * Default implementation for clearing atomic state. |
da6c0596 DV |
193 | * This should only be used by drivers which are still subclassing |
194 | * &drm_atomic_state and haven't switched to &drm_private_state yet. | |
cc4ceb48 | 195 | */ |
036ef573 | 196 | void drm_atomic_state_default_clear(struct drm_atomic_state *state) |
cc4ceb48 DV |
197 | { |
198 | struct drm_device *dev = state->dev; | |
6f75cea6 | 199 | struct drm_mode_config *config = &dev->mode_config; |
cc4ceb48 DV |
200 | int i; |
201 | ||
6e22dc35 | 202 | drm_dbg_atomic(dev, "Clearing atomic state %p\n", state); |
cc4ceb48 | 203 | |
f52b69f1 | 204 | for (i = 0; i < state->num_connector; i++) { |
63e83c1d | 205 | struct drm_connector *connector = state->connectors[i].ptr; |
cc4ceb48 DV |
206 | |
207 | if (!connector) | |
208 | continue; | |
209 | ||
d2307dea | 210 | connector->funcs->atomic_destroy_state(connector, |
63e83c1d DV |
211 | state->connectors[i].state); |
212 | state->connectors[i].ptr = NULL; | |
213 | state->connectors[i].state = NULL; | |
f0b408ee VS |
214 | state->connectors[i].old_state = NULL; |
215 | state->connectors[i].new_state = NULL; | |
ad093607 | 216 | drm_connector_put(connector); |
cc4ceb48 DV |
217 | } |
218 | ||
6f75cea6 | 219 | for (i = 0; i < config->num_crtc; i++) { |
5d943aa6 | 220 | struct drm_crtc *crtc = state->crtcs[i].ptr; |
cc4ceb48 DV |
221 | |
222 | if (!crtc) | |
223 | continue; | |
224 | ||
225 | crtc->funcs->atomic_destroy_state(crtc, | |
5d943aa6 | 226 | state->crtcs[i].state); |
3b24f7d6 | 227 | |
5d943aa6 DV |
228 | state->crtcs[i].ptr = NULL; |
229 | state->crtcs[i].state = NULL; | |
f0b408ee VS |
230 | state->crtcs[i].old_state = NULL; |
231 | state->crtcs[i].new_state = NULL; | |
4364bcb2 LL |
232 | |
233 | if (state->crtcs[i].commit) { | |
234 | drm_crtc_commit_put(state->crtcs[i].commit); | |
235 | state->crtcs[i].commit = NULL; | |
236 | } | |
cc4ceb48 DV |
237 | } |
238 | ||
6f75cea6 | 239 | for (i = 0; i < config->num_total_plane; i++) { |
b8b5342b | 240 | struct drm_plane *plane = state->planes[i].ptr; |
cc4ceb48 DV |
241 | |
242 | if (!plane) | |
243 | continue; | |
244 | ||
245 | plane->funcs->atomic_destroy_state(plane, | |
b8b5342b DV |
246 | state->planes[i].state); |
247 | state->planes[i].ptr = NULL; | |
248 | state->planes[i].state = NULL; | |
f0b408ee VS |
249 | state->planes[i].old_state = NULL; |
250 | state->planes[i].new_state = NULL; | |
cc4ceb48 | 251 | } |
b430c27a PD |
252 | |
253 | for (i = 0; i < state->num_private_objs; i++) { | |
a4370c77 | 254 | struct drm_private_obj *obj = state->private_objs[i].ptr; |
b430c27a | 255 | |
a4370c77 VS |
256 | obj->funcs->atomic_destroy_state(obj, |
257 | state->private_objs[i].state); | |
258 | state->private_objs[i].ptr = NULL; | |
259 | state->private_objs[i].state = NULL; | |
b5cb2e5a VS |
260 | state->private_objs[i].old_state = NULL; |
261 | state->private_objs[i].new_state = NULL; | |
b430c27a PD |
262 | } |
263 | state->num_private_objs = 0; | |
264 | ||
21a01abb ML |
265 | if (state->fake_commit) { |
266 | drm_crtc_commit_put(state->fake_commit); | |
267 | state->fake_commit = NULL; | |
268 | } | |
cc4ceb48 | 269 | } |
036ef573 ML |
270 | EXPORT_SYMBOL(drm_atomic_state_default_clear); |
271 | ||
272 | /** | |
273 | * drm_atomic_state_clear - clear state object | |
274 | * @state: atomic state | |
275 | * | |
276 | * When the w/w mutex algorithm detects a deadlock we need to back off and drop | |
277 | * all locks. So someone else could sneak in and change the current modeset | |
278 | * configuration. Which means that all the state assembled in @state is no | |
279 | * longer an atomic update to the current state, but to some arbitrary earlier | |
d574528a DV |
280 | * state. Which could break assumptions the driver's |
281 | * &drm_mode_config_funcs.atomic_check likely relies on. | |
036ef573 ML |
282 | * |
283 | * Hence we must clear all cached state and completely start over, using this | |
284 | * function. | |
285 | */ | |
286 | void drm_atomic_state_clear(struct drm_atomic_state *state) | |
287 | { | |
288 | struct drm_device *dev = state->dev; | |
289 | struct drm_mode_config *config = &dev->mode_config; | |
290 | ||
291 | if (config->funcs->atomic_state_clear) | |
292 | config->funcs->atomic_state_clear(state); | |
293 | else | |
294 | drm_atomic_state_default_clear(state); | |
295 | } | |
cc4ceb48 DV |
296 | EXPORT_SYMBOL(drm_atomic_state_clear); |
297 | ||
298 | /** | |
0853695c CW |
299 | * __drm_atomic_state_free - free all memory for an atomic state |
300 | * @ref: This atomic state to deallocate | |
cc4ceb48 DV |
301 | * |
302 | * This frees all memory associated with an atomic state, including all the | |
42240c90 | 303 | * per-object state for planes, CRTCs and connectors. |
cc4ceb48 | 304 | */ |
0853695c | 305 | void __drm_atomic_state_free(struct kref *ref) |
cc4ceb48 | 306 | { |
0853695c | 307 | struct drm_atomic_state *state = container_of(ref, typeof(*state), ref); |
4e076c73 DV |
308 | struct drm_device *dev = state->dev; |
309 | struct drm_mode_config *config = &dev->mode_config; | |
036ef573 | 310 | |
cc4ceb48 DV |
311 | drm_atomic_state_clear(state); |
312 | ||
6e22dc35 | 313 | drm_dbg_atomic(state->dev, "Freeing atomic state %p\n", state); |
cc4ceb48 | 314 | |
036ef573 ML |
315 | if (config->funcs->atomic_state_free) { |
316 | config->funcs->atomic_state_free(state); | |
317 | } else { | |
318 | drm_atomic_state_default_release(state); | |
319 | kfree(state); | |
320 | } | |
4e076c73 DV |
321 | |
322 | drm_dev_put(dev); | |
cc4ceb48 | 323 | } |
0853695c | 324 | EXPORT_SYMBOL(__drm_atomic_state_free); |
cc4ceb48 DV |
325 | |
326 | /** | |
42240c90 | 327 | * drm_atomic_get_crtc_state - get CRTC state |
cc4ceb48 | 328 | * @state: global atomic state object |
42240c90 | 329 | * @crtc: CRTC to get state object for |
cc4ceb48 | 330 | * |
42240c90 TR |
331 | * This function returns the CRTC state for the given CRTC, allocating it if |
332 | * needed. It will also grab the relevant CRTC lock to make sure that the state | |
cc4ceb48 DV |
333 | * is consistent. |
334 | * | |
fb6473a4 DV |
335 | * WARNING: Drivers may only add new CRTC states to a @state if |
336 | * drm_atomic_state.allow_modeset is set, or if it's a driver-internal commit | |
337 | * not created by userspace through an IOCTL call. | |
338 | * | |
cc4ceb48 DV |
339 | * Returns: |
340 | * | |
341 | * Either the allocated state or the error code encoded into the pointer. When | |
342 | * the error is EDEADLK then the w/w mutex code has detected a deadlock and the | |
343 | * entire atomic sequence must be restarted. All other errors are fatal. | |
344 | */ | |
345 | struct drm_crtc_state * | |
346 | drm_atomic_get_crtc_state(struct drm_atomic_state *state, | |
347 | struct drm_crtc *crtc) | |
348 | { | |
1b26a5e1 | 349 | int ret, index = drm_crtc_index(crtc); |
cc4ceb48 DV |
350 | struct drm_crtc_state *crtc_state; |
351 | ||
7f4eaa89 ML |
352 | WARN_ON(!state->acquire_ctx); |
353 | ||
1b26a5e1 ML |
354 | crtc_state = drm_atomic_get_existing_crtc_state(state, crtc); |
355 | if (crtc_state) | |
356 | return crtc_state; | |
cc4ceb48 DV |
357 | |
358 | ret = drm_modeset_lock(&crtc->mutex, state->acquire_ctx); | |
359 | if (ret) | |
360 | return ERR_PTR(ret); | |
361 | ||
362 | crtc_state = crtc->funcs->atomic_duplicate_state(crtc); | |
363 | if (!crtc_state) | |
364 | return ERR_PTR(-ENOMEM); | |
365 | ||
5d943aa6 | 366 | state->crtcs[index].state = crtc_state; |
581e49fe ML |
367 | state->crtcs[index].old_state = crtc->state; |
368 | state->crtcs[index].new_state = crtc_state; | |
5d943aa6 | 369 | state->crtcs[index].ptr = crtc; |
cc4ceb48 DV |
370 | crtc_state->state = state; |
371 | ||
6e22dc35 CS |
372 | drm_dbg_atomic(state->dev, "Added [CRTC:%d:%s] %p state to %p\n", |
373 | crtc->base.id, crtc->name, crtc_state, state); | |
cc4ceb48 DV |
374 | |
375 | return crtc_state; | |
376 | } | |
377 | EXPORT_SYMBOL(drm_atomic_get_crtc_state); | |
378 | ||
b2432adf VS |
379 | static int drm_atomic_crtc_check(const struct drm_crtc_state *old_crtc_state, |
380 | const struct drm_crtc_state *new_crtc_state) | |
5e743737 | 381 | { |
b2432adf VS |
382 | struct drm_crtc *crtc = new_crtc_state->crtc; |
383 | ||
5e743737 RC |
384 | /* NOTE: we explicitly don't enforce constraints such as primary |
385 | * layer covering entire screen, since that is something we want | |
386 | * to allow (on hw that supports it). For hw that does not, it | |
387 | * should be checked in driver's crtc->atomic_check() vfunc. | |
388 | * | |
389 | * TODO: Add generic modeset state checks once we support those. | |
390 | */ | |
eab3bbef | 391 | |
b2432adf | 392 | if (new_crtc_state->active && !new_crtc_state->enable) { |
6e22dc35 CS |
393 | drm_dbg_atomic(crtc->dev, |
394 | "[CRTC:%d:%s] active without enabled\n", | |
395 | crtc->base.id, crtc->name); | |
eab3bbef DV |
396 | return -EINVAL; |
397 | } | |
398 | ||
99cf4a29 DS |
399 | /* The state->enable vs. state->mode_blob checks can be WARN_ON, |
400 | * as this is a kernel-internal detail that userspace should never | |
060726c5 BMC |
401 | * be able to trigger. |
402 | */ | |
99cf4a29 | 403 | if (drm_core_check_feature(crtc->dev, DRIVER_ATOMIC) && |
b2432adf | 404 | WARN_ON(new_crtc_state->enable && !new_crtc_state->mode_blob)) { |
6e22dc35 CS |
405 | drm_dbg_atomic(crtc->dev, |
406 | "[CRTC:%d:%s] enabled without mode blob\n", | |
407 | crtc->base.id, crtc->name); | |
99cf4a29 DS |
408 | return -EINVAL; |
409 | } | |
410 | ||
411 | if (drm_core_check_feature(crtc->dev, DRIVER_ATOMIC) && | |
b2432adf | 412 | WARN_ON(!new_crtc_state->enable && new_crtc_state->mode_blob)) { |
6e22dc35 CS |
413 | drm_dbg_atomic(crtc->dev, |
414 | "[CRTC:%d:%s] disabled with mode blob\n", | |
415 | crtc->base.id, crtc->name); | |
99cf4a29 DS |
416 | return -EINVAL; |
417 | } | |
418 | ||
4cba6850 DV |
419 | /* |
420 | * Reject event generation for when a CRTC is off and stays off. | |
421 | * It wouldn't be hard to implement this, but userspace has a track | |
422 | * record of happily burning through 100% cpu (or worse, crash) when the | |
423 | * display pipe is suspended. To avoid all that fun just reject updates | |
424 | * that ask for events since likely that indicates a bug in the | |
425 | * compositor's drawing loop. This is consistent with the vblank IOCTL | |
426 | * and legacy page_flip IOCTL which also reject service on a disabled | |
427 | * pipe. | |
428 | */ | |
b2432adf VS |
429 | if (new_crtc_state->event && |
430 | !new_crtc_state->active && !old_crtc_state->active) { | |
6e22dc35 CS |
431 | drm_dbg_atomic(crtc->dev, |
432 | "[CRTC:%d:%s] requesting event but off\n", | |
433 | crtc->base.id, crtc->name); | |
4cba6850 DV |
434 | return -EINVAL; |
435 | } | |
436 | ||
5e743737 RC |
437 | return 0; |
438 | } | |
439 | ||
fceffb32 RC |
440 | static void drm_atomic_crtc_print_state(struct drm_printer *p, |
441 | const struct drm_crtc_state *state) | |
442 | { | |
443 | struct drm_crtc *crtc = state->crtc; | |
444 | ||
445 | drm_printf(p, "crtc[%u]: %s\n", crtc->base.id, crtc->name); | |
446 | drm_printf(p, "\tenable=%d\n", state->enable); | |
447 | drm_printf(p, "\tactive=%d\n", state->active); | |
1452c25b | 448 | drm_printf(p, "\tself_refresh_active=%d\n", state->self_refresh_active); |
fceffb32 RC |
449 | drm_printf(p, "\tplanes_changed=%d\n", state->planes_changed); |
450 | drm_printf(p, "\tmode_changed=%d\n", state->mode_changed); | |
451 | drm_printf(p, "\tactive_changed=%d\n", state->active_changed); | |
452 | drm_printf(p, "\tconnectors_changed=%d\n", state->connectors_changed); | |
453 | drm_printf(p, "\tcolor_mgmt_changed=%d\n", state->color_mgmt_changed); | |
454 | drm_printf(p, "\tplane_mask=%x\n", state->plane_mask); | |
455 | drm_printf(p, "\tconnector_mask=%x\n", state->connector_mask); | |
456 | drm_printf(p, "\tencoder_mask=%x\n", state->encoder_mask); | |
457 | drm_printf(p, "\tmode: " DRM_MODE_FMT "\n", DRM_MODE_ARG(&state->mode)); | |
458 | ||
459 | if (crtc->funcs->atomic_print_state) | |
460 | crtc->funcs->atomic_print_state(p, state); | |
461 | } | |
462 | ||
935774cd BS |
463 | static int drm_atomic_connector_check(struct drm_connector *connector, |
464 | struct drm_connector_state *state) | |
465 | { | |
466 | struct drm_crtc_state *crtc_state; | |
467 | struct drm_writeback_job *writeback_job = state->writeback_job; | |
47e22ff1 RS |
468 | const struct drm_display_info *info = &connector->display_info; |
469 | ||
470 | state->max_bpc = info->bpc ? info->bpc : 8; | |
471 | if (connector->max_bpc_property) | |
472 | state->max_bpc = min(state->max_bpc, state->max_requested_bpc); | |
935774cd BS |
473 | |
474 | if ((connector->connector_type != DRM_MODE_CONNECTOR_WRITEBACK) || !writeback_job) | |
475 | return 0; | |
476 | ||
477 | if (writeback_job->fb && !state->crtc) { | |
6e22dc35 CS |
478 | drm_dbg_atomic(connector->dev, |
479 | "[CONNECTOR:%d:%s] framebuffer without CRTC\n", | |
480 | connector->base.id, connector->name); | |
935774cd BS |
481 | return -EINVAL; |
482 | } | |
483 | ||
484 | if (state->crtc) | |
485 | crtc_state = drm_atomic_get_existing_crtc_state(state->state, | |
486 | state->crtc); | |
487 | ||
488 | if (writeback_job->fb && !crtc_state->active) { | |
6e22dc35 CS |
489 | drm_dbg_atomic(connector->dev, |
490 | "[CONNECTOR:%d:%s] has framebuffer, but [CRTC:%d] is off\n", | |
491 | connector->base.id, connector->name, | |
492 | state->crtc->base.id); | |
935774cd BS |
493 | return -EINVAL; |
494 | } | |
495 | ||
8581d510 LLATC |
496 | if (!writeback_job->fb) { |
497 | if (writeback_job->out_fence) { | |
6e22dc35 CS |
498 | drm_dbg_atomic(connector->dev, |
499 | "[CONNECTOR:%d:%s] requesting out-fence without framebuffer\n", | |
500 | connector->base.id, connector->name); | |
8581d510 LLATC |
501 | return -EINVAL; |
502 | } | |
503 | ||
504 | drm_writeback_cleanup_job(writeback_job); | |
505 | state->writeback_job = NULL; | |
b13cc8dd BS |
506 | } |
507 | ||
935774cd BS |
508 | return 0; |
509 | } | |
510 | ||
cc4ceb48 DV |
511 | /** |
512 | * drm_atomic_get_plane_state - get plane state | |
513 | * @state: global atomic state object | |
514 | * @plane: plane to get state object for | |
515 | * | |
516 | * This function returns the plane state for the given plane, allocating it if | |
517 | * needed. It will also grab the relevant plane lock to make sure that the state | |
518 | * is consistent. | |
519 | * | |
520 | * Returns: | |
521 | * | |
522 | * Either the allocated state or the error code encoded into the pointer. When | |
523 | * the error is EDEADLK then the w/w mutex code has detected a deadlock and the | |
524 | * entire atomic sequence must be restarted. All other errors are fatal. | |
525 | */ | |
526 | struct drm_plane_state * | |
527 | drm_atomic_get_plane_state(struct drm_atomic_state *state, | |
528 | struct drm_plane *plane) | |
529 | { | |
1b26a5e1 | 530 | int ret, index = drm_plane_index(plane); |
cc4ceb48 DV |
531 | struct drm_plane_state *plane_state; |
532 | ||
7f4eaa89 ML |
533 | WARN_ON(!state->acquire_ctx); |
534 | ||
e00fb856 VS |
535 | /* the legacy pointers should never be set */ |
536 | WARN_ON(plane->fb); | |
537 | WARN_ON(plane->old_fb); | |
538 | WARN_ON(plane->crtc); | |
539 | ||
1b26a5e1 ML |
540 | plane_state = drm_atomic_get_existing_plane_state(state, plane); |
541 | if (plane_state) | |
542 | return plane_state; | |
cc4ceb48 | 543 | |
4d02e2de | 544 | ret = drm_modeset_lock(&plane->mutex, state->acquire_ctx); |
cc4ceb48 DV |
545 | if (ret) |
546 | return ERR_PTR(ret); | |
547 | ||
548 | plane_state = plane->funcs->atomic_duplicate_state(plane); | |
549 | if (!plane_state) | |
550 | return ERR_PTR(-ENOMEM); | |
551 | ||
b8b5342b DV |
552 | state->planes[index].state = plane_state; |
553 | state->planes[index].ptr = plane; | |
581e49fe ML |
554 | state->planes[index].old_state = plane->state; |
555 | state->planes[index].new_state = plane_state; | |
cc4ceb48 DV |
556 | plane_state->state = state; |
557 | ||
6e22dc35 CS |
558 | drm_dbg_atomic(plane->dev, "Added [PLANE:%d:%s] %p state to %p\n", |
559 | plane->base.id, plane->name, plane_state, state); | |
cc4ceb48 DV |
560 | |
561 | if (plane_state->crtc) { | |
562 | struct drm_crtc_state *crtc_state; | |
563 | ||
564 | crtc_state = drm_atomic_get_crtc_state(state, | |
565 | plane_state->crtc); | |
566 | if (IS_ERR(crtc_state)) | |
567 | return ERR_CAST(crtc_state); | |
568 | } | |
569 | ||
570 | return plane_state; | |
571 | } | |
572 | EXPORT_SYMBOL(drm_atomic_get_plane_state); | |
573 | ||
f8aeb41c | 574 | static bool |
d9be05b7 VS |
575 | plane_switching_crtc(const struct drm_plane_state *old_plane_state, |
576 | const struct drm_plane_state *new_plane_state) | |
f8aeb41c | 577 | { |
d9be05b7 | 578 | if (!old_plane_state->crtc || !new_plane_state->crtc) |
f8aeb41c DV |
579 | return false; |
580 | ||
d9be05b7 | 581 | if (old_plane_state->crtc == new_plane_state->crtc) |
f8aeb41c DV |
582 | return false; |
583 | ||
584 | /* This could be refined, but currently there's no helper or driver code | |
585 | * to implement direct switching of active planes nor userspace to take | |
586 | * advantage of more direct plane switching without the intermediate | |
587 | * full OFF state. | |
588 | */ | |
589 | return true; | |
590 | } | |
591 | ||
5e743737 RC |
592 | /** |
593 | * drm_atomic_plane_check - check plane state | |
d9be05b7 VS |
594 | * @old_plane_state: old plane state to check |
595 | * @new_plane_state: new plane state to check | |
5e743737 RC |
596 | * |
597 | * Provides core sanity checks for plane state. | |
598 | * | |
599 | * RETURNS: | |
600 | * Zero on success, error code on failure | |
601 | */ | |
d9be05b7 VS |
602 | static int drm_atomic_plane_check(const struct drm_plane_state *old_plane_state, |
603 | const struct drm_plane_state *new_plane_state) | |
5e743737 | 604 | { |
d9be05b7 VS |
605 | struct drm_plane *plane = new_plane_state->plane; |
606 | struct drm_crtc *crtc = new_plane_state->crtc; | |
1c0a80f1 | 607 | const struct drm_framebuffer *fb = new_plane_state->fb; |
b881ba8f DB |
608 | unsigned int fb_width, fb_height; |
609 | struct drm_mode_rect *clips; | |
610 | uint32_t num_clips; | |
ead8610d | 611 | int ret; |
5e743737 | 612 | |
1c0a80f1 DB |
613 | /* either *both* CRTC and FB must be set, or neither */ |
614 | if (crtc && !fb) { | |
615 | drm_dbg_atomic(plane->dev, "[PLANE:%d:%s] CRTC set but no FB\n", | |
6e22dc35 | 616 | plane->base.id, plane->name); |
5e743737 | 617 | return -EINVAL; |
1c0a80f1 DB |
618 | } else if (fb && !crtc) { |
619 | drm_dbg_atomic(plane->dev, "[PLANE:%d:%s] FB set but no CRTC\n", | |
620 | plane->base.id, plane->name); | |
5e743737 RC |
621 | return -EINVAL; |
622 | } | |
623 | ||
624 | /* if disabled, we don't care about the rest of the state: */ | |
d9be05b7 | 625 | if (!crtc) |
5e743737 RC |
626 | return 0; |
627 | ||
628 | /* Check whether this plane is usable on this CRTC */ | |
d9be05b7 | 629 | if (!(plane->possible_crtcs & drm_crtc_mask(crtc))) { |
6e22dc35 CS |
630 | drm_dbg_atomic(plane->dev, |
631 | "Invalid [CRTC:%d:%s] for [PLANE:%d:%s]\n", | |
632 | crtc->base.id, crtc->name, | |
633 | plane->base.id, plane->name); | |
5e743737 RC |
634 | return -EINVAL; |
635 | } | |
636 | ||
b881ba8f DB |
637 | /* Check whether this plane supports the fb pixel format. */ |
638 | ret = drm_plane_check_pixel_format(plane, fb->format->format, | |
639 | fb->modifier); | |
640 | if (ret) { | |
641 | drm_dbg_atomic(plane->dev, | |
642 | "[PLANE:%d:%s] invalid pixel format %p4cc, modifier 0x%llx\n", | |
643 | plane->base.id, plane->name, | |
644 | &fb->format->format, fb->modifier); | |
645 | return ret; | |
646 | } | |
647 | ||
5e743737 | 648 | /* Give drivers some help against integer overflows */ |
d9be05b7 VS |
649 | if (new_plane_state->crtc_w > INT_MAX || |
650 | new_plane_state->crtc_x > INT_MAX - (int32_t) new_plane_state->crtc_w || | |
651 | new_plane_state->crtc_h > INT_MAX || | |
652 | new_plane_state->crtc_y > INT_MAX - (int32_t) new_plane_state->crtc_h) { | |
6e22dc35 CS |
653 | drm_dbg_atomic(plane->dev, |
654 | "[PLANE:%d:%s] invalid CRTC coordinates %ux%u+%d+%d\n", | |
655 | plane->base.id, plane->name, | |
656 | new_plane_state->crtc_w, new_plane_state->crtc_h, | |
657 | new_plane_state->crtc_x, new_plane_state->crtc_y); | |
5e743737 RC |
658 | return -ERANGE; |
659 | } | |
660 | ||
b881ba8f DB |
661 | fb_width = fb->width << 16; |
662 | fb_height = fb->height << 16; | |
5e743737 | 663 | |
b881ba8f DB |
664 | /* Make sure source coordinates are inside the fb. */ |
665 | if (new_plane_state->src_w > fb_width || | |
666 | new_plane_state->src_x > fb_width - new_plane_state->src_w || | |
667 | new_plane_state->src_h > fb_height || | |
668 | new_plane_state->src_y > fb_height - new_plane_state->src_h) { | |
669 | drm_dbg_atomic(plane->dev, | |
670 | "[PLANE:%d:%s] invalid source coordinates " | |
671 | "%u.%06ux%u.%06u+%u.%06u+%u.%06u (fb %ux%u)\n", | |
672 | plane->base.id, plane->name, | |
673 | new_plane_state->src_w >> 16, | |
674 | ((new_plane_state->src_w & 0xffff) * 15625) >> 10, | |
675 | new_plane_state->src_h >> 16, | |
676 | ((new_plane_state->src_h & 0xffff) * 15625) >> 10, | |
677 | new_plane_state->src_x >> 16, | |
678 | ((new_plane_state->src_x & 0xffff) * 15625) >> 10, | |
679 | new_plane_state->src_y >> 16, | |
680 | ((new_plane_state->src_y & 0xffff) * 15625) >> 10, | |
681 | fb->width, fb->height); | |
682 | return -ENOSPC; | |
683 | } | |
684 | ||
685 | clips = __drm_plane_get_damage_clips(new_plane_state); | |
686 | num_clips = drm_plane_get_damage_clips_count(new_plane_state); | |
687 | ||
688 | /* Make sure damage clips are valid and inside the fb. */ | |
689 | while (num_clips > 0) { | |
690 | if (clips->x1 >= clips->x2 || | |
691 | clips->y1 >= clips->y2 || | |
692 | clips->x1 < 0 || | |
693 | clips->y1 < 0 || | |
694 | clips->x2 > fb_width || | |
695 | clips->y2 > fb_height) { | |
696 | drm_dbg_atomic(plane->dev, | |
697 | "[PLANE:%d:%s] invalid damage clip %d %d %d %d\n", | |
698 | plane->base.id, plane->name, clips->x1, | |
699 | clips->y1, clips->x2, clips->y2); | |
700 | return -EINVAL; | |
701 | } | |
702 | clips++; | |
703 | num_clips--; | |
704 | } | |
d3b21767 | 705 | |
d9be05b7 | 706 | if (plane_switching_crtc(old_plane_state, new_plane_state)) { |
6e22dc35 CS |
707 | drm_dbg_atomic(plane->dev, |
708 | "[PLANE:%d:%s] switching CRTC directly\n", | |
709 | plane->base.id, plane->name); | |
f8aeb41c DV |
710 | return -EINVAL; |
711 | } | |
712 | ||
5e743737 RC |
713 | return 0; |
714 | } | |
715 | ||
fceffb32 RC |
716 | static void drm_atomic_plane_print_state(struct drm_printer *p, |
717 | const struct drm_plane_state *state) | |
718 | { | |
719 | struct drm_plane *plane = state->plane; | |
720 | struct drm_rect src = drm_plane_state_src(state); | |
721 | struct drm_rect dest = drm_plane_state_dest(state); | |
722 | ||
723 | drm_printf(p, "plane[%u]: %s\n", plane->base.id, plane->name); | |
724 | drm_printf(p, "\tcrtc=%s\n", state->crtc ? state->crtc->name : "(null)"); | |
725 | drm_printf(p, "\tfb=%u\n", state->fb ? state->fb->base.id : 0); | |
f02b604b NT |
726 | if (state->fb) |
727 | drm_framebuffer_print_info(p, 2, state->fb); | |
fceffb32 RC |
728 | drm_printf(p, "\tcrtc-pos=" DRM_RECT_FMT "\n", DRM_RECT_ARG(&dest)); |
729 | drm_printf(p, "\tsrc-pos=" DRM_RECT_FP_FMT "\n", DRM_RECT_FP_ARG(&src)); | |
730 | drm_printf(p, "\trotation=%x\n", state->rotation); | |
f8878bb2 | 731 | drm_printf(p, "\tnormalized-zpos=%x\n", state->normalized_zpos); |
56dbbaff VS |
732 | drm_printf(p, "\tcolor-encoding=%s\n", |
733 | drm_get_color_encoding_name(state->color_encoding)); | |
734 | drm_printf(p, "\tcolor-range=%s\n", | |
735 | drm_get_color_range_name(state->color_range)); | |
24013b93 | 736 | drm_printf(p, "\tcolor_mgmt_changed=%d\n", state->color_mgmt_changed); |
fceffb32 RC |
737 | |
738 | if (plane->funcs->atomic_print_state) | |
739 | plane->funcs->atomic_print_state(p, state); | |
740 | } | |
741 | ||
da6c0596 DV |
742 | /** |
743 | * DOC: handling driver private state | |
744 | * | |
745 | * Very often the DRM objects exposed to userspace in the atomic modeset api | |
746 | * (&drm_connector, &drm_crtc and &drm_plane) do not map neatly to the | |
747 | * underlying hardware. Especially for any kind of shared resources (e.g. shared | |
748 | * clocks, scaler units, bandwidth and fifo limits shared among a group of | |
749 | * planes or CRTCs, and so on) it makes sense to model these as independent | |
750 | * objects. Drivers then need to do similar state tracking and commit ordering for | |
0ae865ef | 751 | * such private (since not exposed to userspace) objects as the atomic core and |
da6c0596 DV |
752 | * helpers already provide for connectors, planes and CRTCs. |
753 | * | |
754 | * To make this easier on drivers the atomic core provides some support to track | |
755 | * driver private state objects using struct &drm_private_obj, with the | |
756 | * associated state struct &drm_private_state. | |
757 | * | |
758 | * Similar to userspace-exposed objects, private state structures can be | |
0380c684 DV |
759 | * acquired by calling drm_atomic_get_private_obj_state(). This also takes care |
760 | * of locking, hence drivers should not have a need to call drm_modeset_lock() | |
761 | * directly. Sequence of the actual hardware state commit is not handled, | |
762 | * drivers might need to keep track of struct drm_crtc_commit within subclassed | |
763 | * structure of &drm_private_state as necessary, e.g. similar to | |
764 | * &drm_plane_state.commit. See also &drm_atomic_state.fake_commit. | |
da6c0596 DV |
765 | * |
766 | * All private state structures contained in a &drm_atomic_state update can be | |
767 | * iterated using for_each_oldnew_private_obj_in_state(), | |
768 | * for_each_new_private_obj_in_state() and for_each_old_private_obj_in_state(). | |
769 | * Drivers are recommended to wrap these for each type of driver private state | |
770 | * object they have, filtering on &drm_private_obj.funcs using for_each_if(), at | |
771 | * least if they want to iterate over all objects of a given type. | |
772 | * | |
773 | * An earlier way to handle driver private state was by subclassing struct | |
774 | * &drm_atomic_state. But since that encourages non-standard ways to implement | |
775 | * the check/commit split atomic requires (by using e.g. "check and rollback or | |
776 | * commit instead" of "duplicate state, check, then either commit or release | |
777 | * duplicated state) it is deprecated in favour of using &drm_private_state. | |
778 | */ | |
779 | ||
a4370c77 VS |
780 | /** |
781 | * drm_atomic_private_obj_init - initialize private object | |
b962a120 | 782 | * @dev: DRM device this object will be attached to |
a4370c77 VS |
783 | * @obj: private object |
784 | * @state: initial private object state | |
785 | * @funcs: pointer to the struct of function pointers that identify the object | |
786 | * type | |
787 | * | |
788 | * Initialize the private object, which can be embedded into any | |
789 | * driver private object that needs its own atomic state. | |
790 | */ | |
791 | void | |
b962a120 RC |
792 | drm_atomic_private_obj_init(struct drm_device *dev, |
793 | struct drm_private_obj *obj, | |
a4370c77 VS |
794 | struct drm_private_state *state, |
795 | const struct drm_private_state_funcs *funcs) | |
796 | { | |
797 | memset(obj, 0, sizeof(*obj)); | |
798 | ||
b962a120 RC |
799 | drm_modeset_lock_init(&obj->lock); |
800 | ||
a4370c77 VS |
801 | obj->state = state; |
802 | obj->funcs = funcs; | |
b962a120 | 803 | list_add_tail(&obj->head, &dev->mode_config.privobj_list); |
97a1f01b MR |
804 | |
805 | state->obj = obj; | |
a4370c77 VS |
806 | } |
807 | EXPORT_SYMBOL(drm_atomic_private_obj_init); | |
808 | ||
809 | /** | |
810 | * drm_atomic_private_obj_fini - finalize private object | |
811 | * @obj: private object | |
812 | * | |
813 | * Finalize the private object. | |
814 | */ | |
815 | void | |
816 | drm_atomic_private_obj_fini(struct drm_private_obj *obj) | |
817 | { | |
b962a120 | 818 | list_del(&obj->head); |
a4370c77 | 819 | obj->funcs->atomic_destroy_state(obj, obj->state); |
b962a120 | 820 | drm_modeset_lock_fini(&obj->lock); |
a4370c77 VS |
821 | } |
822 | EXPORT_SYMBOL(drm_atomic_private_obj_fini); | |
823 | ||
b430c27a PD |
824 | /** |
825 | * drm_atomic_get_private_obj_state - get private object state | |
826 | * @state: global atomic state | |
827 | * @obj: private object to get the state for | |
b430c27a PD |
828 | * |
829 | * This function returns the private object state for the given private object, | |
b962a120 RC |
830 | * allocating the state if needed. It will also grab the relevant private |
831 | * object lock to make sure that the state is consistent. | |
b430c27a PD |
832 | * |
833 | * RETURNS: | |
834 | * | |
835 | * Either the allocated state or the error code encoded into a pointer. | |
836 | */ | |
a4370c77 VS |
837 | struct drm_private_state * |
838 | drm_atomic_get_private_obj_state(struct drm_atomic_state *state, | |
839 | struct drm_private_obj *obj) | |
b430c27a | 840 | { |
b962a120 | 841 | int index, num_objs, i, ret; |
b430c27a PD |
842 | size_t size; |
843 | struct __drm_private_objs_state *arr; | |
a4370c77 | 844 | struct drm_private_state *obj_state; |
b430c27a PD |
845 | |
846 | for (i = 0; i < state->num_private_objs; i++) | |
a4370c77 VS |
847 | if (obj == state->private_objs[i].ptr) |
848 | return state->private_objs[i].state; | |
b430c27a | 849 | |
b962a120 RC |
850 | ret = drm_modeset_lock(&obj->lock, state->acquire_ctx); |
851 | if (ret) | |
852 | return ERR_PTR(ret); | |
853 | ||
b430c27a PD |
854 | num_objs = state->num_private_objs + 1; |
855 | size = sizeof(*state->private_objs) * num_objs; | |
856 | arr = krealloc(state->private_objs, size, GFP_KERNEL); | |
857 | if (!arr) | |
858 | return ERR_PTR(-ENOMEM); | |
859 | ||
860 | state->private_objs = arr; | |
861 | index = state->num_private_objs; | |
862 | memset(&state->private_objs[index], 0, sizeof(*state->private_objs)); | |
863 | ||
a4370c77 VS |
864 | obj_state = obj->funcs->atomic_duplicate_state(obj); |
865 | if (!obj_state) | |
b430c27a PD |
866 | return ERR_PTR(-ENOMEM); |
867 | ||
a4370c77 VS |
868 | state->private_objs[index].state = obj_state; |
869 | state->private_objs[index].old_state = obj->state; | |
870 | state->private_objs[index].new_state = obj_state; | |
871 | state->private_objs[index].ptr = obj; | |
e89ea355 | 872 | obj_state->state = state; |
a4370c77 | 873 | |
b430c27a PD |
874 | state->num_private_objs = num_objs; |
875 | ||
6e22dc35 CS |
876 | drm_dbg_atomic(state->dev, |
877 | "Added new private object %p state %p to %p\n", | |
878 | obj, obj_state, state); | |
b430c27a | 879 | |
a4370c77 | 880 | return obj_state; |
b430c27a PD |
881 | } |
882 | EXPORT_SYMBOL(drm_atomic_get_private_obj_state); | |
883 | ||
9801a7ea ATC |
884 | /** |
885 | * drm_atomic_get_old_private_obj_state | |
886 | * @state: global atomic state object | |
887 | * @obj: private_obj to grab | |
888 | * | |
889 | * This function returns the old private object state for the given private_obj, | |
890 | * or NULL if the private_obj is not part of the global atomic state. | |
891 | */ | |
892 | struct drm_private_state * | |
2081bd89 | 893 | drm_atomic_get_old_private_obj_state(const struct drm_atomic_state *state, |
9801a7ea ATC |
894 | struct drm_private_obj *obj) |
895 | { | |
896 | int i; | |
897 | ||
898 | for (i = 0; i < state->num_private_objs; i++) | |
899 | if (obj == state->private_objs[i].ptr) | |
900 | return state->private_objs[i].old_state; | |
901 | ||
902 | return NULL; | |
903 | } | |
904 | EXPORT_SYMBOL(drm_atomic_get_old_private_obj_state); | |
905 | ||
906 | /** | |
907 | * drm_atomic_get_new_private_obj_state | |
908 | * @state: global atomic state object | |
909 | * @obj: private_obj to grab | |
910 | * | |
911 | * This function returns the new private object state for the given private_obj, | |
912 | * or NULL if the private_obj is not part of the global atomic state. | |
913 | */ | |
914 | struct drm_private_state * | |
2081bd89 | 915 | drm_atomic_get_new_private_obj_state(const struct drm_atomic_state *state, |
9801a7ea ATC |
916 | struct drm_private_obj *obj) |
917 | { | |
918 | int i; | |
919 | ||
920 | for (i = 0; i < state->num_private_objs; i++) | |
921 | if (obj == state->private_objs[i].ptr) | |
922 | return state->private_objs[i].new_state; | |
923 | ||
924 | return NULL; | |
925 | } | |
926 | EXPORT_SYMBOL(drm_atomic_get_new_private_obj_state); | |
927 | ||
1b27fbdd LP |
928 | /** |
929 | * drm_atomic_get_old_connector_for_encoder - Get old connector for an encoder | |
930 | * @state: Atomic state | |
931 | * @encoder: The encoder to fetch the connector state for | |
932 | * | |
933 | * This function finds and returns the connector that was connected to @encoder | |
934 | * as specified by the @state. | |
935 | * | |
936 | * If there is no connector in @state which previously had @encoder connected to | |
937 | * it, this function will return NULL. While this may seem like an invalid use | |
938 | * case, it is sometimes useful to differentiate commits which had no prior | |
939 | * connectors attached to @encoder vs ones that did (and to inspect their | |
940 | * state). This is especially true in enable hooks because the pipeline has | |
941 | * changed. | |
942 | * | |
943 | * Returns: The old connector connected to @encoder, or NULL if the encoder is | |
944 | * not connected. | |
945 | */ | |
946 | struct drm_connector * | |
2081bd89 | 947 | drm_atomic_get_old_connector_for_encoder(const struct drm_atomic_state *state, |
1b27fbdd LP |
948 | struct drm_encoder *encoder) |
949 | { | |
950 | struct drm_connector_state *conn_state; | |
951 | struct drm_connector *connector; | |
952 | unsigned int i; | |
953 | ||
954 | for_each_old_connector_in_state(state, connector, conn_state, i) { | |
955 | if (conn_state->best_encoder == encoder) | |
956 | return connector; | |
957 | } | |
958 | ||
959 | return NULL; | |
960 | } | |
961 | EXPORT_SYMBOL(drm_atomic_get_old_connector_for_encoder); | |
962 | ||
963 | /** | |
964 | * drm_atomic_get_new_connector_for_encoder - Get new connector for an encoder | |
965 | * @state: Atomic state | |
966 | * @encoder: The encoder to fetch the connector state for | |
967 | * | |
968 | * This function finds and returns the connector that will be connected to | |
969 | * @encoder as specified by the @state. | |
970 | * | |
971 | * If there is no connector in @state which will have @encoder connected to it, | |
972 | * this function will return NULL. While this may seem like an invalid use case, | |
973 | * it is sometimes useful to differentiate commits which have no connectors | |
974 | * attached to @encoder vs ones that do (and to inspect their state). This is | |
975 | * especially true in disable hooks because the pipeline will change. | |
976 | * | |
977 | * Returns: The new connector connected to @encoder, or NULL if the encoder is | |
978 | * not connected. | |
979 | */ | |
980 | struct drm_connector * | |
2081bd89 | 981 | drm_atomic_get_new_connector_for_encoder(const struct drm_atomic_state *state, |
1b27fbdd LP |
982 | struct drm_encoder *encoder) |
983 | { | |
984 | struct drm_connector_state *conn_state; | |
985 | struct drm_connector *connector; | |
986 | unsigned int i; | |
987 | ||
988 | for_each_new_connector_in_state(state, connector, conn_state, i) { | |
989 | if (conn_state->best_encoder == encoder) | |
990 | return connector; | |
991 | } | |
992 | ||
993 | return NULL; | |
994 | } | |
995 | EXPORT_SYMBOL(drm_atomic_get_new_connector_for_encoder); | |
996 | ||
7b9a9e35 VP |
997 | /** |
998 | * drm_atomic_get_old_crtc_for_encoder - Get old crtc for an encoder | |
999 | * @state: Atomic state | |
1000 | * @encoder: The encoder to fetch the crtc state for | |
1001 | * | |
1002 | * This function finds and returns the crtc that was connected to @encoder | |
1003 | * as specified by the @state. | |
1004 | * | |
1005 | * Returns: The old crtc connected to @encoder, or NULL if the encoder is | |
1006 | * not connected. | |
1007 | */ | |
1008 | struct drm_crtc * | |
1009 | drm_atomic_get_old_crtc_for_encoder(struct drm_atomic_state *state, | |
1010 | struct drm_encoder *encoder) | |
1011 | { | |
1012 | struct drm_connector *connector; | |
1013 | struct drm_connector_state *conn_state; | |
1014 | ||
1015 | connector = drm_atomic_get_old_connector_for_encoder(state, encoder); | |
1016 | if (!connector) | |
1017 | return NULL; | |
1018 | ||
1019 | conn_state = drm_atomic_get_old_connector_state(state, connector); | |
1020 | if (!conn_state) | |
1021 | return NULL; | |
1022 | ||
1023 | return conn_state->crtc; | |
1024 | } | |
1025 | EXPORT_SYMBOL(drm_atomic_get_old_crtc_for_encoder); | |
1026 | ||
1027 | /** | |
1028 | * drm_atomic_get_new_crtc_for_encoder - Get new crtc for an encoder | |
1029 | * @state: Atomic state | |
1030 | * @encoder: The encoder to fetch the crtc state for | |
1031 | * | |
1032 | * This function finds and returns the crtc that will be connected to @encoder | |
1033 | * as specified by the @state. | |
1034 | * | |
1035 | * Returns: The new crtc connected to @encoder, or NULL if the encoder is | |
1036 | * not connected. | |
1037 | */ | |
1038 | struct drm_crtc * | |
1039 | drm_atomic_get_new_crtc_for_encoder(struct drm_atomic_state *state, | |
1040 | struct drm_encoder *encoder) | |
1041 | { | |
1042 | struct drm_connector *connector; | |
1043 | struct drm_connector_state *conn_state; | |
1044 | ||
1045 | connector = drm_atomic_get_new_connector_for_encoder(state, encoder); | |
1046 | if (!connector) | |
1047 | return NULL; | |
1048 | ||
1049 | conn_state = drm_atomic_get_new_connector_state(state, connector); | |
1050 | if (!conn_state) | |
1051 | return NULL; | |
1052 | ||
1053 | return conn_state->crtc; | |
1054 | } | |
1055 | EXPORT_SYMBOL(drm_atomic_get_new_crtc_for_encoder); | |
1056 | ||
cc4ceb48 DV |
1057 | /** |
1058 | * drm_atomic_get_connector_state - get connector state | |
1059 | * @state: global atomic state object | |
1060 | * @connector: connector to get state object for | |
1061 | * | |
1062 | * This function returns the connector state for the given connector, | |
1063 | * allocating it if needed. It will also grab the relevant connector lock to | |
1064 | * make sure that the state is consistent. | |
1065 | * | |
1066 | * Returns: | |
1067 | * | |
1068 | * Either the allocated state or the error code encoded into the pointer. When | |
1069 | * the error is EDEADLK then the w/w mutex code has detected a deadlock and the | |
1070 | * entire atomic sequence must be restarted. All other errors are fatal. | |
1071 | */ | |
1072 | struct drm_connector_state * | |
1073 | drm_atomic_get_connector_state(struct drm_atomic_state *state, | |
1074 | struct drm_connector *connector) | |
1075 | { | |
1076 | int ret, index; | |
1077 | struct drm_mode_config *config = &connector->dev->mode_config; | |
1078 | struct drm_connector_state *connector_state; | |
1079 | ||
7f4eaa89 ML |
1080 | WARN_ON(!state->acquire_ctx); |
1081 | ||
c7eb76f4 DV |
1082 | ret = drm_modeset_lock(&config->connection_mutex, state->acquire_ctx); |
1083 | if (ret) | |
1084 | return ERR_PTR(ret); | |
1085 | ||
cc4ceb48 DV |
1086 | index = drm_connector_index(connector); |
1087 | ||
f52b69f1 | 1088 | if (index >= state->num_connector) { |
63e83c1d | 1089 | struct __drm_connnectors_state *c; |
5fff80bb ML |
1090 | int alloc = max(index + 1, config->num_connector); |
1091 | ||
32ce2553 BG |
1092 | c = krealloc_array(state->connectors, alloc, |
1093 | sizeof(*state->connectors), GFP_KERNEL); | |
5fff80bb ML |
1094 | if (!c) |
1095 | return ERR_PTR(-ENOMEM); | |
1096 | ||
1097 | state->connectors = c; | |
1098 | memset(&state->connectors[state->num_connector], 0, | |
1099 | sizeof(*state->connectors) * (alloc - state->num_connector)); | |
1100 | ||
5fff80bb | 1101 | state->num_connector = alloc; |
f52b69f1 DV |
1102 | } |
1103 | ||
63e83c1d DV |
1104 | if (state->connectors[index].state) |
1105 | return state->connectors[index].state; | |
cc4ceb48 | 1106 | |
cc4ceb48 DV |
1107 | connector_state = connector->funcs->atomic_duplicate_state(connector); |
1108 | if (!connector_state) | |
1109 | return ERR_PTR(-ENOMEM); | |
1110 | ||
ad093607 | 1111 | drm_connector_get(connector); |
63e83c1d | 1112 | state->connectors[index].state = connector_state; |
581e49fe ML |
1113 | state->connectors[index].old_state = connector->state; |
1114 | state->connectors[index].new_state = connector_state; | |
63e83c1d | 1115 | state->connectors[index].ptr = connector; |
cc4ceb48 DV |
1116 | connector_state->state = state; |
1117 | ||
6e22dc35 | 1118 | drm_dbg_atomic(connector->dev, "Added [CONNECTOR:%d:%s] %p state to %p\n", |
6ac7c548 RK |
1119 | connector->base.id, connector->name, |
1120 | connector_state, state); | |
cc4ceb48 DV |
1121 | |
1122 | if (connector_state->crtc) { | |
1123 | struct drm_crtc_state *crtc_state; | |
1124 | ||
1125 | crtc_state = drm_atomic_get_crtc_state(state, | |
1126 | connector_state->crtc); | |
1127 | if (IS_ERR(crtc_state)) | |
1128 | return ERR_CAST(crtc_state); | |
1129 | } | |
1130 | ||
1131 | return connector_state; | |
1132 | } | |
1133 | EXPORT_SYMBOL(drm_atomic_get_connector_state); | |
1134 | ||
fceffb32 RC |
1135 | static void drm_atomic_connector_print_state(struct drm_printer *p, |
1136 | const struct drm_connector_state *state) | |
1137 | { | |
1138 | struct drm_connector *connector = state->connector; | |
1139 | ||
1140 | drm_printf(p, "connector[%u]: %s\n", connector->base.id, connector->name); | |
1141 | drm_printf(p, "\tcrtc=%s\n", state->crtc ? state->crtc->name : "(null)"); | |
1452c25b | 1142 | drm_printf(p, "\tself_refresh_aware=%d\n", state->self_refresh_aware); |
7d386975 | 1143 | drm_printf(p, "\tmax_requested_bpc=%d\n", state->max_requested_bpc); |
035d53e0 | 1144 | drm_printf(p, "\tcolorspace=%s\n", drm_get_colorspace_name(state->colorspace)); |
fceffb32 | 1145 | |
8cbc5caf BS |
1146 | if (connector->connector_type == DRM_MODE_CONNECTOR_WRITEBACK) |
1147 | if (state->writeback_job && state->writeback_job->fb) | |
1148 | drm_printf(p, "\tfb=%d\n", state->writeback_job->fb->base.id); | |
1149 | ||
fceffb32 RC |
1150 | if (connector->funcs->atomic_print_state) |
1151 | connector->funcs->atomic_print_state(p, state); | |
1152 | } | |
1153 | ||
75146591 BB |
1154 | /** |
1155 | * drm_atomic_get_bridge_state - get bridge state | |
1156 | * @state: global atomic state object | |
1157 | * @bridge: bridge to get state object for | |
1158 | * | |
1159 | * This function returns the bridge state for the given bridge, allocating it | |
1160 | * if needed. It will also grab the relevant bridge lock to make sure that the | |
1161 | * state is consistent. | |
1162 | * | |
1163 | * Returns: | |
1164 | * | |
1165 | * Either the allocated state or the error code encoded into the pointer. When | |
1166 | * the error is EDEADLK then the w/w mutex code has detected a deadlock and the | |
1167 | * entire atomic sequence must be restarted. | |
1168 | */ | |
1169 | struct drm_bridge_state * | |
1170 | drm_atomic_get_bridge_state(struct drm_atomic_state *state, | |
1171 | struct drm_bridge *bridge) | |
1172 | { | |
1173 | struct drm_private_state *obj_state; | |
1174 | ||
1175 | obj_state = drm_atomic_get_private_obj_state(state, &bridge->base); | |
1176 | if (IS_ERR(obj_state)) | |
1177 | return ERR_CAST(obj_state); | |
1178 | ||
1179 | return drm_priv_to_bridge_state(obj_state); | |
1180 | } | |
1181 | EXPORT_SYMBOL(drm_atomic_get_bridge_state); | |
1182 | ||
1183 | /** | |
1184 | * drm_atomic_get_old_bridge_state - get old bridge state, if it exists | |
1185 | * @state: global atomic state object | |
1186 | * @bridge: bridge to grab | |
1187 | * | |
1188 | * This function returns the old bridge state for the given bridge, or NULL if | |
1189 | * the bridge is not part of the global atomic state. | |
1190 | */ | |
1191 | struct drm_bridge_state * | |
2081bd89 | 1192 | drm_atomic_get_old_bridge_state(const struct drm_atomic_state *state, |
75146591 BB |
1193 | struct drm_bridge *bridge) |
1194 | { | |
1195 | struct drm_private_state *obj_state; | |
1196 | ||
1197 | obj_state = drm_atomic_get_old_private_obj_state(state, &bridge->base); | |
1198 | if (!obj_state) | |
1199 | return NULL; | |
1200 | ||
1201 | return drm_priv_to_bridge_state(obj_state); | |
1202 | } | |
1203 | EXPORT_SYMBOL(drm_atomic_get_old_bridge_state); | |
1204 | ||
1205 | /** | |
1206 | * drm_atomic_get_new_bridge_state - get new bridge state, if it exists | |
1207 | * @state: global atomic state object | |
1208 | * @bridge: bridge to grab | |
1209 | * | |
1210 | * This function returns the new bridge state for the given bridge, or NULL if | |
1211 | * the bridge is not part of the global atomic state. | |
1212 | */ | |
1213 | struct drm_bridge_state * | |
2081bd89 | 1214 | drm_atomic_get_new_bridge_state(const struct drm_atomic_state *state, |
75146591 BB |
1215 | struct drm_bridge *bridge) |
1216 | { | |
1217 | struct drm_private_state *obj_state; | |
1218 | ||
1219 | obj_state = drm_atomic_get_new_private_obj_state(state, &bridge->base); | |
1220 | if (!obj_state) | |
1221 | return NULL; | |
1222 | ||
1223 | return drm_priv_to_bridge_state(obj_state); | |
1224 | } | |
1225 | EXPORT_SYMBOL(drm_atomic_get_new_bridge_state); | |
1226 | ||
1227 | /** | |
1228 | * drm_atomic_add_encoder_bridges - add bridges attached to an encoder | |
1229 | * @state: atomic state | |
1230 | * @encoder: DRM encoder | |
1231 | * | |
1232 | * This function adds all bridges attached to @encoder. This is needed to add | |
1233 | * bridge states to @state and make them available when | |
91ea8330 BB |
1234 | * &drm_bridge_funcs.atomic_check(), &drm_bridge_funcs.atomic_pre_enable(), |
1235 | * &drm_bridge_funcs.atomic_enable(), | |
1236 | * &drm_bridge_funcs.atomic_disable_post_disable() are called. | |
75146591 BB |
1237 | * |
1238 | * Returns: | |
1239 | * 0 on success or can fail with -EDEADLK or -ENOMEM. When the error is EDEADLK | |
1240 | * then the w/w mutex code has detected a deadlock and the entire atomic | |
1241 | * sequence must be restarted. All other errors are fatal. | |
1242 | */ | |
1243 | int | |
1244 | drm_atomic_add_encoder_bridges(struct drm_atomic_state *state, | |
1245 | struct drm_encoder *encoder) | |
1246 | { | |
1247 | struct drm_bridge_state *bridge_state; | |
1248 | struct drm_bridge *bridge; | |
1249 | ||
1250 | if (!encoder) | |
1251 | return 0; | |
1252 | ||
6e22dc35 CS |
1253 | drm_dbg_atomic(encoder->dev, |
1254 | "Adding all bridges for [encoder:%d:%s] to %p\n", | |
1255 | encoder->base.id, encoder->name, state); | |
75146591 BB |
1256 | |
1257 | drm_for_each_bridge_in_chain(encoder, bridge) { | |
1258 | /* Skip bridges that don't implement the atomic state hooks. */ | |
1259 | if (!bridge->funcs->atomic_duplicate_state) | |
1260 | continue; | |
1261 | ||
1262 | bridge_state = drm_atomic_get_bridge_state(state, bridge); | |
1263 | if (IS_ERR(bridge_state)) | |
1264 | return PTR_ERR(bridge_state); | |
1265 | } | |
1266 | ||
1267 | return 0; | |
1268 | } | |
1269 | EXPORT_SYMBOL(drm_atomic_add_encoder_bridges); | |
1270 | ||
cc4ceb48 | 1271 | /** |
42240c90 | 1272 | * drm_atomic_add_affected_connectors - add connectors for CRTC |
cc4ceb48 | 1273 | * @state: atomic state |
42240c90 | 1274 | * @crtc: DRM CRTC |
cc4ceb48 DV |
1275 | * |
1276 | * This function walks the current configuration and adds all connectors | |
1277 | * currently using @crtc to the atomic configuration @state. Note that this | |
1278 | * function must acquire the connection mutex. This can potentially cause | |
a8a1de90 | 1279 | * unneeded serialization if the update is just for the planes on one CRTC. Hence |
cc4ceb48 DV |
1280 | * drivers and helpers should only call this when really needed (e.g. when a |
1281 | * full modeset needs to happen due to some change). | |
1282 | * | |
1283 | * Returns: | |
1284 | * 0 on success or can fail with -EDEADLK or -ENOMEM. When the error is EDEADLK | |
1285 | * then the w/w mutex code has detected a deadlock and the entire atomic | |
1286 | * sequence must be restarted. All other errors are fatal. | |
1287 | */ | |
1288 | int | |
1289 | drm_atomic_add_affected_connectors(struct drm_atomic_state *state, | |
1290 | struct drm_crtc *crtc) | |
1291 | { | |
1292 | struct drm_mode_config *config = &state->dev->mode_config; | |
1293 | struct drm_connector *connector; | |
1294 | struct drm_connector_state *conn_state; | |
613051da | 1295 | struct drm_connector_list_iter conn_iter; |
5351bbdd | 1296 | struct drm_crtc_state *crtc_state; |
cc4ceb48 DV |
1297 | int ret; |
1298 | ||
5351bbdd ML |
1299 | crtc_state = drm_atomic_get_crtc_state(state, crtc); |
1300 | if (IS_ERR(crtc_state)) | |
1301 | return PTR_ERR(crtc_state); | |
1302 | ||
cc4ceb48 DV |
1303 | ret = drm_modeset_lock(&config->connection_mutex, state->acquire_ctx); |
1304 | if (ret) | |
1305 | return ret; | |
1306 | ||
6e22dc35 CS |
1307 | drm_dbg_atomic(crtc->dev, |
1308 | "Adding all current connectors for [CRTC:%d:%s] to %p\n", | |
1309 | crtc->base.id, crtc->name, state); | |
cc4ceb48 DV |
1310 | |
1311 | /* | |
5351bbdd ML |
1312 | * Changed connectors are already in @state, so only need to look |
1313 | * at the connector_mask in crtc_state. | |
cc4ceb48 | 1314 | */ |
b982dab1 | 1315 | drm_connector_list_iter_begin(state->dev, &conn_iter); |
613051da | 1316 | drm_for_each_connector_iter(connector, &conn_iter) { |
73705732 | 1317 | if (!(crtc_state->connector_mask & drm_connector_mask(connector))) |
cc4ceb48 DV |
1318 | continue; |
1319 | ||
1320 | conn_state = drm_atomic_get_connector_state(state, connector); | |
613051da | 1321 | if (IS_ERR(conn_state)) { |
b982dab1 | 1322 | drm_connector_list_iter_end(&conn_iter); |
cc4ceb48 | 1323 | return PTR_ERR(conn_state); |
613051da | 1324 | } |
cc4ceb48 | 1325 | } |
b982dab1 | 1326 | drm_connector_list_iter_end(&conn_iter); |
cc4ceb48 DV |
1327 | |
1328 | return 0; | |
1329 | } | |
1330 | EXPORT_SYMBOL(drm_atomic_add_affected_connectors); | |
1331 | ||
e01e9f75 | 1332 | /** |
42240c90 | 1333 | * drm_atomic_add_affected_planes - add planes for CRTC |
e01e9f75 | 1334 | * @state: atomic state |
42240c90 | 1335 | * @crtc: DRM CRTC |
e01e9f75 ML |
1336 | * |
1337 | * This function walks the current configuration and adds all planes | |
1338 | * currently used by @crtc to the atomic configuration @state. This is useful | |
1339 | * when an atomic commit also needs to check all currently enabled plane on | |
1340 | * @crtc, e.g. when changing the mode. It's also useful when re-enabling a CRTC | |
1341 | * to avoid special code to force-enable all planes. | |
1342 | * | |
1343 | * Since acquiring a plane state will always also acquire the w/w mutex of the | |
1344 | * current CRTC for that plane (if there is any) adding all the plane states for | |
a8a1de90 | 1345 | * a CRTC will not reduce parallelism of atomic updates. |
e01e9f75 ML |
1346 | * |
1347 | * Returns: | |
1348 | * 0 on success or can fail with -EDEADLK or -ENOMEM. When the error is EDEADLK | |
1349 | * then the w/w mutex code has detected a deadlock and the entire atomic | |
1350 | * sequence must be restarted. All other errors are fatal. | |
1351 | */ | |
1352 | int | |
1353 | drm_atomic_add_affected_planes(struct drm_atomic_state *state, | |
1354 | struct drm_crtc *crtc) | |
1355 | { | |
534903d6 VS |
1356 | const struct drm_crtc_state *old_crtc_state = |
1357 | drm_atomic_get_old_crtc_state(state, crtc); | |
e01e9f75 ML |
1358 | struct drm_plane *plane; |
1359 | ||
b4d93679 | 1360 | WARN_ON(!drm_atomic_get_new_crtc_state(state, crtc)); |
e01e9f75 | 1361 | |
6e22dc35 CS |
1362 | drm_dbg_atomic(crtc->dev, |
1363 | "Adding all current planes for [CRTC:%d:%s] to %p\n", | |
1364 | crtc->base.id, crtc->name, state); | |
b6f690ab | 1365 | |
534903d6 | 1366 | drm_for_each_plane_mask(plane, state->dev, old_crtc_state->plane_mask) { |
e01e9f75 ML |
1367 | struct drm_plane_state *plane_state = |
1368 | drm_atomic_get_plane_state(state, plane); | |
1369 | ||
1370 | if (IS_ERR(plane_state)) | |
1371 | return PTR_ERR(plane_state); | |
1372 | } | |
1373 | return 0; | |
1374 | } | |
1375 | EXPORT_SYMBOL(drm_atomic_add_affected_planes); | |
1376 | ||
cc4ceb48 DV |
1377 | /** |
1378 | * drm_atomic_check_only - check whether a given config would work | |
1379 | * @state: atomic configuration to check | |
1380 | * | |
1381 | * Note that this function can return -EDEADLK if the driver needed to acquire | |
1382 | * more locks but encountered a deadlock. The caller must then do the usual w/w | |
1383 | * backoff dance and restart. All other errors are fatal. | |
1384 | * | |
1385 | * Returns: | |
1386 | * 0 on success, negative error code on failure. | |
1387 | */ | |
1388 | int drm_atomic_check_only(struct drm_atomic_state *state) | |
1389 | { | |
5e743737 RC |
1390 | struct drm_device *dev = state->dev; |
1391 | struct drm_mode_config *config = &dev->mode_config; | |
df63b999 | 1392 | struct drm_plane *plane; |
d9be05b7 VS |
1393 | struct drm_plane_state *old_plane_state; |
1394 | struct drm_plane_state *new_plane_state; | |
df63b999 | 1395 | struct drm_crtc *crtc; |
b2432adf VS |
1396 | struct drm_crtc_state *old_crtc_state; |
1397 | struct drm_crtc_state *new_crtc_state; | |
935774cd BS |
1398 | struct drm_connector *conn; |
1399 | struct drm_connector_state *conn_state; | |
1cdb005d FDF |
1400 | unsigned int requested_crtc = 0; |
1401 | unsigned int affected_crtc = 0; | |
5e743737 | 1402 | int i, ret = 0; |
cc4ceb48 | 1403 | |
6e22dc35 | 1404 | drm_dbg_atomic(dev, "checking %p\n", state); |
cc4ceb48 | 1405 | |
5ec1cebd MN |
1406 | for_each_new_crtc_in_state(state, crtc, new_crtc_state, i) { |
1407 | if (new_crtc_state->enable) | |
1408 | requested_crtc |= drm_crtc_mask(crtc); | |
1409 | } | |
fb6473a4 | 1410 | |
d9be05b7 VS |
1411 | for_each_oldnew_plane_in_state(state, plane, old_plane_state, new_plane_state, i) { |
1412 | ret = drm_atomic_plane_check(old_plane_state, new_plane_state); | |
5e743737 | 1413 | if (ret) { |
6e22dc35 CS |
1414 | drm_dbg_atomic(dev, "[PLANE:%d:%s] atomic core check failed\n", |
1415 | plane->base.id, plane->name); | |
5e743737 RC |
1416 | return ret; |
1417 | } | |
1418 | } | |
1419 | ||
b2432adf VS |
1420 | for_each_oldnew_crtc_in_state(state, crtc, old_crtc_state, new_crtc_state, i) { |
1421 | ret = drm_atomic_crtc_check(old_crtc_state, new_crtc_state); | |
5e743737 | 1422 | if (ret) { |
6e22dc35 CS |
1423 | drm_dbg_atomic(dev, "[CRTC:%d:%s] atomic core check failed\n", |
1424 | crtc->base.id, crtc->name); | |
5e743737 RC |
1425 | return ret; |
1426 | } | |
1427 | } | |
1428 | ||
935774cd BS |
1429 | for_each_new_connector_in_state(state, conn, conn_state, i) { |
1430 | ret = drm_atomic_connector_check(conn, conn_state); | |
1431 | if (ret) { | |
6e22dc35 CS |
1432 | drm_dbg_atomic(dev, "[CONNECTOR:%d:%s] atomic core check failed\n", |
1433 | conn->base.id, conn->name); | |
935774cd BS |
1434 | return ret; |
1435 | } | |
1436 | } | |
1437 | ||
14d4e522 | 1438 | if (config->funcs->atomic_check) { |
5e743737 RC |
1439 | ret = config->funcs->atomic_check(state->dev, state); |
1440 | ||
14d4e522 | 1441 | if (ret) { |
6e22dc35 CS |
1442 | drm_dbg_atomic(dev, "atomic driver check for %p failed: %d\n", |
1443 | state, ret); | |
14d4e522 LP |
1444 | return ret; |
1445 | } | |
1446 | } | |
a0ffc51e | 1447 | |
d34f20d6 | 1448 | if (!state->allow_modeset) { |
b2432adf VS |
1449 | for_each_new_crtc_in_state(state, crtc, new_crtc_state, i) { |
1450 | if (drm_atomic_crtc_needs_modeset(new_crtc_state)) { | |
6e22dc35 CS |
1451 | drm_dbg_atomic(dev, "[CRTC:%d:%s] requires full modeset\n", |
1452 | crtc->base.id, crtc->name); | |
d34f20d6 RC |
1453 | return -EINVAL; |
1454 | } | |
1455 | } | |
1456 | } | |
1457 | ||
5ec1cebd MN |
1458 | for_each_new_crtc_in_state(state, crtc, new_crtc_state, i) { |
1459 | if (new_crtc_state->enable) | |
1460 | affected_crtc |= drm_crtc_mask(crtc); | |
1461 | } | |
fb6473a4 DV |
1462 | |
1463 | /* | |
1464 | * For commits that allow modesets drivers can add other CRTCs to the | |
1465 | * atomic commit, e.g. when they need to reallocate global resources. | |
1466 | * This can cause spurious EBUSY, which robs compositors of a very | |
1467 | * effective sanity check for their drawing loop. Therefor only allow | |
1468 | * drivers to add unrelated CRTC states for modeset commits. | |
1469 | * | |
1470 | * FIXME: Should add affected_crtc mask to the ATOMIC IOCTL as an output | |
1471 | * so compositors know what's going on. | |
1472 | */ | |
1473 | if (affected_crtc != requested_crtc) { | |
6e22dc35 CS |
1474 | drm_dbg_atomic(dev, |
1475 | "driver added CRTC to commit: requested 0x%x, affected 0x%0x\n", | |
1476 | requested_crtc, affected_crtc); | |
fb6473a4 DV |
1477 | WARN(!state->allow_modeset, "adding CRTC not allowed without modesets: requested 0x%x, affected 0x%0x\n", |
1478 | requested_crtc, affected_crtc); | |
1479 | } | |
1480 | ||
a0ffc51e | 1481 | return 0; |
cc4ceb48 DV |
1482 | } |
1483 | EXPORT_SYMBOL(drm_atomic_check_only); | |
1484 | ||
1485 | /** | |
1486 | * drm_atomic_commit - commit configuration atomically | |
1487 | * @state: atomic configuration to check | |
1488 | * | |
1489 | * Note that this function can return -EDEADLK if the driver needed to acquire | |
1490 | * more locks but encountered a deadlock. The caller must then do the usual w/w | |
1491 | * backoff dance and restart. All other errors are fatal. | |
1492 | * | |
76fede2f ML |
1493 | * This function will take its own reference on @state. |
1494 | * Callers should always release their reference with drm_atomic_state_put(). | |
cc4ceb48 DV |
1495 | * |
1496 | * Returns: | |
1497 | * 0 on success, negative error code on failure. | |
1498 | */ | |
1499 | int drm_atomic_commit(struct drm_atomic_state *state) | |
1500 | { | |
1501 | struct drm_mode_config *config = &state->dev->mode_config; | |
018ad18f | 1502 | struct drm_printer p = drm_info_printer(state->dev->dev); |
cc4ceb48 DV |
1503 | int ret; |
1504 | ||
018ad18f MR |
1505 | if (drm_debug_enabled(DRM_UT_STATE)) |
1506 | drm_atomic_print_new_state(state, &p); | |
1507 | ||
cc4ceb48 DV |
1508 | ret = drm_atomic_check_only(state); |
1509 | if (ret) | |
1510 | return ret; | |
1511 | ||
6e22dc35 | 1512 | drm_dbg_atomic(state->dev, "committing %p\n", state); |
cc4ceb48 DV |
1513 | |
1514 | return config->funcs->atomic_commit(state->dev, state, false); | |
1515 | } | |
1516 | EXPORT_SYMBOL(drm_atomic_commit); | |
1517 | ||
1518 | /** | |
d574528a | 1519 | * drm_atomic_nonblocking_commit - atomic nonblocking commit |
cc4ceb48 DV |
1520 | * @state: atomic configuration to check |
1521 | * | |
1522 | * Note that this function can return -EDEADLK if the driver needed to acquire | |
1523 | * more locks but encountered a deadlock. The caller must then do the usual w/w | |
1524 | * backoff dance and restart. All other errors are fatal. | |
1525 | * | |
76fede2f ML |
1526 | * This function will take its own reference on @state. |
1527 | * Callers should always release their reference with drm_atomic_state_put(). | |
cc4ceb48 DV |
1528 | * |
1529 | * Returns: | |
1530 | * 0 on success, negative error code on failure. | |
1531 | */ | |
b837ba0a | 1532 | int drm_atomic_nonblocking_commit(struct drm_atomic_state *state) |
cc4ceb48 DV |
1533 | { |
1534 | struct drm_mode_config *config = &state->dev->mode_config; | |
1535 | int ret; | |
1536 | ||
1537 | ret = drm_atomic_check_only(state); | |
1538 | if (ret) | |
1539 | return ret; | |
1540 | ||
6e22dc35 | 1541 | drm_dbg_atomic(state->dev, "committing %p nonblocking\n", state); |
cc4ceb48 DV |
1542 | |
1543 | return config->funcs->atomic_commit(state->dev, state, true); | |
1544 | } | |
b837ba0a | 1545 | EXPORT_SYMBOL(drm_atomic_nonblocking_commit); |
d34f20d6 | 1546 | |
df737895 NT |
1547 | /* just used from drm-client and atomic-helper: */ |
1548 | int __drm_atomic_helper_disable_plane(struct drm_plane *plane, | |
1549 | struct drm_plane_state *plane_state) | |
1550 | { | |
1551 | int ret; | |
1552 | ||
1553 | ret = drm_atomic_set_crtc_for_plane(plane_state, NULL); | |
1554 | if (ret != 0) | |
1555 | return ret; | |
1556 | ||
1557 | drm_atomic_set_fb_for_plane(plane_state, NULL); | |
1558 | plane_state->crtc_x = 0; | |
1559 | plane_state->crtc_y = 0; | |
1560 | plane_state->crtc_w = 0; | |
1561 | plane_state->crtc_h = 0; | |
1562 | plane_state->src_x = 0; | |
1563 | plane_state->src_y = 0; | |
1564 | plane_state->src_w = 0; | |
1565 | plane_state->src_h = 0; | |
1566 | ||
1567 | return 0; | |
1568 | } | |
1569 | EXPORT_SYMBOL(__drm_atomic_helper_disable_plane); | |
1570 | ||
1571 | static int update_output_state(struct drm_atomic_state *state, | |
1572 | struct drm_mode_set *set) | |
1573 | { | |
1574 | struct drm_device *dev = set->crtc->dev; | |
1575 | struct drm_crtc *crtc; | |
1576 | struct drm_crtc_state *new_crtc_state; | |
1577 | struct drm_connector *connector; | |
1578 | struct drm_connector_state *new_conn_state; | |
1579 | int ret, i; | |
1580 | ||
1581 | ret = drm_modeset_lock(&dev->mode_config.connection_mutex, | |
1582 | state->acquire_ctx); | |
1583 | if (ret) | |
1584 | return ret; | |
1585 | ||
1586 | /* First disable all connectors on the target crtc. */ | |
1587 | ret = drm_atomic_add_affected_connectors(state, set->crtc); | |
1588 | if (ret) | |
1589 | return ret; | |
1590 | ||
1591 | for_each_new_connector_in_state(state, connector, new_conn_state, i) { | |
1592 | if (new_conn_state->crtc == set->crtc) { | |
1593 | ret = drm_atomic_set_crtc_for_connector(new_conn_state, | |
1594 | NULL); | |
1595 | if (ret) | |
1596 | return ret; | |
1597 | ||
1598 | /* Make sure legacy setCrtc always re-trains */ | |
1599 | new_conn_state->link_status = DRM_LINK_STATUS_GOOD; | |
1600 | } | |
1601 | } | |
1602 | ||
1603 | /* Then set all connectors from set->connectors on the target crtc */ | |
1604 | for (i = 0; i < set->num_connectors; i++) { | |
1605 | new_conn_state = drm_atomic_get_connector_state(state, | |
1606 | set->connectors[i]); | |
1607 | if (IS_ERR(new_conn_state)) | |
1608 | return PTR_ERR(new_conn_state); | |
1609 | ||
1610 | ret = drm_atomic_set_crtc_for_connector(new_conn_state, | |
1611 | set->crtc); | |
1612 | if (ret) | |
1613 | return ret; | |
1614 | } | |
1615 | ||
1616 | for_each_new_crtc_in_state(state, crtc, new_crtc_state, i) { | |
1617 | /* | |
1618 | * Don't update ->enable for the CRTC in the set_config request, | |
1619 | * since a mismatch would indicate a bug in the upper layers. | |
1620 | * The actual modeset code later on will catch any | |
1621 | * inconsistencies here. | |
1622 | */ | |
1623 | if (crtc == set->crtc) | |
1624 | continue; | |
1625 | ||
1626 | if (!new_crtc_state->connector_mask) { | |
1627 | ret = drm_atomic_set_mode_prop_for_crtc(new_crtc_state, | |
1628 | NULL); | |
1629 | if (ret < 0) | |
1630 | return ret; | |
1631 | ||
1632 | new_crtc_state->active = false; | |
1633 | } | |
1634 | } | |
1635 | ||
1636 | return 0; | |
1637 | } | |
1638 | ||
1639 | /* just used from drm-client and atomic-helper: */ | |
1640 | int __drm_atomic_helper_set_config(struct drm_mode_set *set, | |
1641 | struct drm_atomic_state *state) | |
1642 | { | |
1643 | struct drm_crtc_state *crtc_state; | |
1644 | struct drm_plane_state *primary_state; | |
1645 | struct drm_crtc *crtc = set->crtc; | |
1646 | int hdisplay, vdisplay; | |
1647 | int ret; | |
1648 | ||
1649 | crtc_state = drm_atomic_get_crtc_state(state, crtc); | |
1650 | if (IS_ERR(crtc_state)) | |
1651 | return PTR_ERR(crtc_state); | |
1652 | ||
1653 | primary_state = drm_atomic_get_plane_state(state, crtc->primary); | |
1654 | if (IS_ERR(primary_state)) | |
1655 | return PTR_ERR(primary_state); | |
1656 | ||
1657 | if (!set->mode) { | |
1658 | WARN_ON(set->fb); | |
1659 | WARN_ON(set->num_connectors); | |
1660 | ||
1661 | ret = drm_atomic_set_mode_for_crtc(crtc_state, NULL); | |
1662 | if (ret != 0) | |
1663 | return ret; | |
1664 | ||
1665 | crtc_state->active = false; | |
1666 | ||
1667 | ret = drm_atomic_set_crtc_for_plane(primary_state, NULL); | |
1668 | if (ret != 0) | |
1669 | return ret; | |
1670 | ||
1671 | drm_atomic_set_fb_for_plane(primary_state, NULL); | |
1672 | ||
1673 | goto commit; | |
1674 | } | |
1675 | ||
1676 | WARN_ON(!set->fb); | |
1677 | WARN_ON(!set->num_connectors); | |
1678 | ||
1679 | ret = drm_atomic_set_mode_for_crtc(crtc_state, set->mode); | |
1680 | if (ret != 0) | |
1681 | return ret; | |
1682 | ||
1683 | crtc_state->active = true; | |
1684 | ||
1685 | ret = drm_atomic_set_crtc_for_plane(primary_state, crtc); | |
1686 | if (ret != 0) | |
1687 | return ret; | |
1688 | ||
1689 | drm_mode_get_hv_timing(set->mode, &hdisplay, &vdisplay); | |
1690 | ||
1691 | drm_atomic_set_fb_for_plane(primary_state, set->fb); | |
1692 | primary_state->crtc_x = 0; | |
1693 | primary_state->crtc_y = 0; | |
1694 | primary_state->crtc_w = hdisplay; | |
1695 | primary_state->crtc_h = vdisplay; | |
1696 | primary_state->src_x = set->x << 16; | |
1697 | primary_state->src_y = set->y << 16; | |
1698 | if (drm_rotation_90_or_270(primary_state->rotation)) { | |
1699 | primary_state->src_w = vdisplay << 16; | |
1700 | primary_state->src_h = hdisplay << 16; | |
1701 | } else { | |
1702 | primary_state->src_w = hdisplay << 16; | |
1703 | primary_state->src_h = vdisplay << 16; | |
1704 | } | |
1705 | ||
1706 | commit: | |
1707 | ret = update_output_state(state, set); | |
1708 | if (ret) | |
1709 | return ret; | |
1710 | ||
1711 | return 0; | |
1712 | } | |
1713 | EXPORT_SYMBOL(__drm_atomic_helper_set_config); | |
1714 | ||
97a1f01b MR |
1715 | static void drm_atomic_private_obj_print_state(struct drm_printer *p, |
1716 | const struct drm_private_state *state) | |
1717 | { | |
1718 | struct drm_private_obj *obj = state->obj; | |
1719 | ||
1720 | if (obj->funcs->atomic_print_state) | |
1721 | obj->funcs->atomic_print_state(p, state); | |
1722 | } | |
1723 | ||
a4324a7a AK |
1724 | /** |
1725 | * drm_atomic_print_new_state - prints drm atomic state | |
1726 | * @state: atomic configuration to check | |
1727 | * @p: drm printer | |
1728 | * | |
1729 | * This functions prints the drm atomic state snapshot using the drm printer | |
1730 | * which is passed to it. This snapshot can be used for debugging purposes. | |
1731 | * | |
1732 | * Note that this function looks into the new state objects and hence its not | |
1733 | * safe to be used after the call to drm_atomic_helper_commit_hw_done(). | |
1734 | */ | |
1735 | void drm_atomic_print_new_state(const struct drm_atomic_state *state, | |
1736 | struct drm_printer *p) | |
fceffb32 | 1737 | { |
fceffb32 RC |
1738 | struct drm_plane *plane; |
1739 | struct drm_plane_state *plane_state; | |
1740 | struct drm_crtc *crtc; | |
1741 | struct drm_crtc_state *crtc_state; | |
1742 | struct drm_connector *connector; | |
1743 | struct drm_connector_state *connector_state; | |
97a1f01b MR |
1744 | struct drm_private_obj *obj; |
1745 | struct drm_private_state *obj_state; | |
fceffb32 RC |
1746 | int i; |
1747 | ||
a4324a7a | 1748 | if (!p) { |
6e22dc35 | 1749 | drm_err(state->dev, "invalid drm printer\n"); |
a4324a7a AK |
1750 | return; |
1751 | } | |
1752 | ||
6e22dc35 | 1753 | drm_dbg_atomic(state->dev, "checking %p\n", state); |
fceffb32 | 1754 | |
5721a380 | 1755 | for_each_new_plane_in_state(state, plane, plane_state, i) |
a4324a7a | 1756 | drm_atomic_plane_print_state(p, plane_state); |
fceffb32 | 1757 | |
5721a380 | 1758 | for_each_new_crtc_in_state(state, crtc, crtc_state, i) |
a4324a7a | 1759 | drm_atomic_crtc_print_state(p, crtc_state); |
fceffb32 | 1760 | |
5721a380 | 1761 | for_each_new_connector_in_state(state, connector, connector_state, i) |
a4324a7a | 1762 | drm_atomic_connector_print_state(p, connector_state); |
97a1f01b MR |
1763 | |
1764 | for_each_new_private_obj_in_state(state, obj, obj_state, i) | |
1765 | drm_atomic_private_obj_print_state(p, obj_state); | |
fceffb32 | 1766 | } |
a4324a7a | 1767 | EXPORT_SYMBOL(drm_atomic_print_new_state); |
fceffb32 | 1768 | |
c2d85564 DV |
1769 | static void __drm_state_dump(struct drm_device *dev, struct drm_printer *p, |
1770 | bool take_locks) | |
6559c901 RC |
1771 | { |
1772 | struct drm_mode_config *config = &dev->mode_config; | |
1773 | struct drm_plane *plane; | |
1774 | struct drm_crtc *crtc; | |
1775 | struct drm_connector *connector; | |
613051da | 1776 | struct drm_connector_list_iter conn_iter; |
c8fa1cc0 | 1777 | struct drm_private_obj *obj; |
6559c901 | 1778 | |
3c499ea0 | 1779 | if (!drm_drv_uses_atomic_modeset(dev)) |
6559c901 RC |
1780 | return; |
1781 | ||
c2d85564 DV |
1782 | list_for_each_entry(plane, &config->plane_list, head) { |
1783 | if (take_locks) | |
1784 | drm_modeset_lock(&plane->mutex, NULL); | |
6559c901 | 1785 | drm_atomic_plane_print_state(p, plane->state); |
c2d85564 DV |
1786 | if (take_locks) |
1787 | drm_modeset_unlock(&plane->mutex); | |
1788 | } | |
6559c901 | 1789 | |
c2d85564 DV |
1790 | list_for_each_entry(crtc, &config->crtc_list, head) { |
1791 | if (take_locks) | |
1792 | drm_modeset_lock(&crtc->mutex, NULL); | |
6559c901 | 1793 | drm_atomic_crtc_print_state(p, crtc->state); |
c2d85564 DV |
1794 | if (take_locks) |
1795 | drm_modeset_unlock(&crtc->mutex); | |
1796 | } | |
6559c901 | 1797 | |
b982dab1 | 1798 | drm_connector_list_iter_begin(dev, &conn_iter); |
c2d85564 DV |
1799 | if (take_locks) |
1800 | drm_modeset_lock(&dev->mode_config.connection_mutex, NULL); | |
613051da | 1801 | drm_for_each_connector_iter(connector, &conn_iter) |
6559c901 | 1802 | drm_atomic_connector_print_state(p, connector->state); |
c2d85564 DV |
1803 | if (take_locks) |
1804 | drm_modeset_unlock(&dev->mode_config.connection_mutex); | |
b982dab1 | 1805 | drm_connector_list_iter_end(&conn_iter); |
c8fa1cc0 DB |
1806 | |
1807 | list_for_each_entry(obj, &config->privobj_list, head) { | |
1808 | if (take_locks) | |
1809 | drm_modeset_lock(&obj->lock, NULL); | |
1810 | drm_atomic_private_obj_print_state(p, obj->state); | |
1811 | if (take_locks) | |
1812 | drm_modeset_unlock(&obj->lock); | |
1813 | } | |
6559c901 | 1814 | } |
c2d85564 DV |
1815 | |
1816 | /** | |
1817 | * drm_state_dump - dump entire device atomic state | |
1818 | * @dev: the drm device | |
1819 | * @p: where to print the state to | |
1820 | * | |
1821 | * Just for debugging. Drivers might want an option to dump state | |
1822 | * to dmesg in case of error irq's. (Hint, you probably want to | |
1823 | * ratelimit this!) | |
1824 | * | |
bd1fbef7 DV |
1825 | * The caller must wrap this drm_modeset_lock_all_ctx() and |
1826 | * drm_modeset_drop_locks(). If this is called from error irq handler, it should | |
1827 | * not be enabled by default - if you are debugging errors you might | |
1828 | * not care that this is racey, but calling this without all modeset locks held | |
1829 | * is inherently unsafe. | |
c2d85564 DV |
1830 | */ |
1831 | void drm_state_dump(struct drm_device *dev, struct drm_printer *p) | |
1832 | { | |
1833 | __drm_state_dump(dev, p, false); | |
1834 | } | |
6559c901 RC |
1835 | EXPORT_SYMBOL(drm_state_dump); |
1836 | ||
1837 | #ifdef CONFIG_DEBUG_FS | |
1838 | static int drm_state_info(struct seq_file *m, void *data) | |
1839 | { | |
6fd80729 MC |
1840 | struct drm_debugfs_entry *entry = m->private; |
1841 | struct drm_device *dev = entry->dev; | |
6559c901 RC |
1842 | struct drm_printer p = drm_seq_file_printer(m); |
1843 | ||
c2d85564 | 1844 | __drm_state_dump(dev, &p, true); |
6559c901 RC |
1845 | |
1846 | return 0; | |
1847 | } | |
1848 | ||
1849 | /* any use in debugfs files to dump individual planes/crtc/etc? */ | |
6fd80729 | 1850 | static const struct drm_debugfs_info drm_atomic_debugfs_list[] = { |
6559c901 RC |
1851 | {"state", drm_state_info, 0}, |
1852 | }; | |
1853 | ||
0b30d57a | 1854 | void drm_atomic_debugfs_init(struct drm_device *dev) |
6559c901 | 1855 | { |
0b30d57a | 1856 | drm_debugfs_add_files(dev, drm_atomic_debugfs_list, |
6fd80729 | 1857 | ARRAY_SIZE(drm_atomic_debugfs_list)); |
6559c901 RC |
1858 | } |
1859 | #endif |